The current metro area population of Teresina in 2025 is 1,069,000, a 0.85% increase from 2024.

• The metro area population of Teresina in 2024 was 1,060,000, a 0.95% increase from 2023.
• The metro area population of Teresina in 2023 was 1,050,000, a 0.86% increase from 2022.
• The metro area population of Teresina in 2022 was 1,041,000, a 0.97% increase from 2021.